Log in to the Sinch Customer Dashboard and select the Users Management option from the Settings menu on the left panel. The User management page is displayed:
To invite another user to your account, click INVITE A USER. The Invite a user form is displayed:
Enter the e-mail address for the user you want to invite and select a user type role for this user (refer to What user type roles are available? for a description of the different user types). Click SEND INVITE.